{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The first genetic defect in human signal transducer and activator of transcription ( STAT ) 5b was identified in an individual with profound short stature and GH insensitivity , immune dysfunction , and severe pulmonary disease , and was caused by an alanine to proline substitution ( A630P ) within the Src homology - 2 ( SH2 ) domain ."}
{"Chemical": ["alanine", "proline"]}